import os
"""Grundquellen-Verwaltung und Kundenquellen-Übersicht."""
import sys
import logging

# Monitor-Source-Rules verfügbar machen
sys.path.insert(0, "/home/claude-dev/AegisSight-Monitor/src")

from fastapi import APIRouter, Depends, HTTPException, status
from pydantic import BaseModel, Field
from typing import Optional
from auth import get_current_admin
from database import db_dependency
import aiosqlite

sys.path.insert(0, os.path.join('/home/claude-dev/AegisSight-Monitor/src'))

from source_rules import (
    discover_source,
    discover_all_feeds,
    evaluate_feeds_with_claude,
    _extract_domain,
    _detect_category,
    domain_to_display_name,
)

logger = logging.getLogger("verwaltung.sources")

router = APIRouter(prefix="/api/sources", tags=["sources"])


class GlobalSourceCreate(BaseModel):
    name: str = Field(min_length=1, max_length=200)
    url: Optional[str] = None
    domain: Optional[str] = None
    source_type: str = Field(default="rss_feed", pattern="^(rss_feed|web_source|excluded)$")
    category: str = Field(default="sonstige")
    status: str = Field(default="active", pattern="^(active|inactive)$")
    notes: Optional[str] = None


class GlobalSourceUpdate(BaseModel):
    name: Optional[str] = Field(default=None, max_length=200)
    url: Optional[str] = None
    domain: Optional[str] = None
    source_type: Optional[str] = Field(default=None, pattern="^(rss_feed|web_source|excluded)$")
    category: Optional[str] = None
    status: Optional[str] = Field(default=None, pattern="^(active|inactive)$")
    notes: Optional[str] = None


@router.get("/global")
async def list_global_sources(
    admin: dict = Depends(get_current_admin),
    db: aiosqlite.Connection = Depends(db_dependency),
):
    """Alle Grundquellen auflisten (tenant_id IS NULL)."""
    cursor = await db.execute(
        "SELECT * FROM sources WHERE tenant_id IS NULL ORDER BY category, source_type, name"
    )
    return [dict(row) for row in await cursor.fetchall()]


@router.post("/global", status_code=201)
async def create_global_source(
    data: GlobalSourceCreate,
    admin: dict = Depends(get_current_admin),
    db: aiosqlite.Connection = Depends(db_dependency),
):
    """Neue Grundquelle anlegen."""
    if data.url:
        cursor = await db.execute(
            "SELECT id, name FROM sources WHERE url = ? AND tenant_id IS NULL",
            (data.url,),
        )
        existing = await cursor.fetchone()
        if existing:
            raise HTTPException(
                status_code=409,
                detail=f"URL bereits vorhanden: {existing['name']}",
            )

    cursor = await db.execute(
        """INSERT INTO sources (name, url, domain, source_type, category, status, notes, added_by, tenant_id)
           VALUES (?, ?, ?, ?, ?, ?, ?, 'system', NULL)""",
        (data.name, data.url, data.domain, data.source_type, data.category, data.status, data.notes),
    )
    await db.commit()

    cursor = await db.execute("SELECT * FROM sources WHERE id = ?", (cursor.lastrowid,))
    return dict(await cursor.fetchone())


@router.put("/global/{source_id}")
async def update_global_source(
    source_id: int,
    data: GlobalSourceUpdate,
    admin: dict = Depends(get_current_admin),
    db: aiosqlite.Connection = Depends(db_dependency),
):
    """Grundquelle bearbeiten."""
    cursor = await db.execute(
        "SELECT * FROM sources WHERE id = ? AND tenant_id IS NULL", (source_id,)
    )
    row = await cursor.fetchone()
    if not row:
        raise HTTPException(status_code=404, detail="Grundquelle nicht gefunden")

    updates = {}
    for field, value in data.model_dump(exclude_none=True).items():
        updates[field] = value

    if not updates:
        return dict(row)

    set_clause = ", ".join(f"{k} = ?" for k in updates)
    values = list(updates.values()) + [source_id]
    await db.execute(f"UPDATE sources SET {set_clause} WHERE id = ?", values)
    await db.commit()

    cursor = await db.execute("SELECT * FROM sources WHERE id = ?", (source_id,))
    return dict(await cursor.fetchone())


@router.delete("/global/{source_id}", status_code=204)
async def delete_global_source(
    source_id: int,
    admin: dict = Depends(get_current_admin),
    db: aiosqlite.Connection = Depends(db_dependency),
):
    """Grundquelle loeschen."""
    cursor = await db.execute(
        "SELECT id FROM sources WHERE id = ? AND tenant_id IS NULL", (source_id,)
    )
    if not await cursor.fetchone():
        raise HTTPException(status_code=404, detail="Grundquelle nicht gefunden")

    await db.execute("DELETE FROM sources WHERE id = ?", (source_id,))
    await db.commit()


@router.get("/tenant")
async def list_tenant_sources(
    admin: dict = Depends(get_current_admin),
    db: aiosqlite.Connection = Depends(db_dependency),
):
    """Alle tenant-spezifischen Quellen mit Org-Name auflisten."""
    cursor = await db.execute("""
        SELECT s.*, o.name as org_name
        FROM sources s
        LEFT JOIN organizations o ON o.id = s.tenant_id
        WHERE s.tenant_id IS NOT NULL
        ORDER BY o.name, s.category, s.name
    """)
    return [dict(row) for row in await cursor.fetchall()]


@router.post("/tenant/{source_id}/promote")
async def promote_to_global(
    source_id: int,
    admin: dict = Depends(get_current_admin),
    db: aiosqlite.Connection = Depends(db_dependency),
):
    """Tenant-Quelle zur Grundquelle befoerdern."""
    cursor = await db.execute("SELECT * FROM sources WHERE id = ?", (source_id,))
    row = await cursor.fetchone()
    if not row:
        raise HTTPException(status_code=404, detail="Quelle nicht gefunden")
    if row["tenant_id"] is None:
        raise HTTPException(status_code=400, detail="Bereits eine Grundquelle")

    if row["url"]:
        cursor = await db.execute(
            "SELECT id FROM sources WHERE url = ? AND tenant_id IS NULL",
            (row["url"],),
        )
        if await cursor.fetchone():
            raise HTTPException(status_code=409, detail="URL bereits als Grundquelle vorhanden")

    await db.execute(
        "UPDATE sources SET tenant_id = NULL, added_by = 'system' WHERE id = ?",
        (source_id,),
    )
    await db.commit()

    cursor = await db.execute("SELECT * FROM sources WHERE id = ?", (source_id,))
    return dict(await cursor.fetchone())



@router.post("/discover")
async def discover_source_endpoint(
    url: str,
    admin: dict = Depends(get_current_admin),
    db: aiosqlite.Connection = Depends(db_dependency),
):
    """URL analysieren: Domain, Kategorie und RSS-Feeds automatisch erkennen.

    Findet alle Feeds einer Domain, bewertet sie mit Claude und gibt
    die relevanten zurueck. Prueft auf bereits vorhandene Grundquellen.
    """
    try:
        multi = await discover_all_feeds(url)
    except Exception as e:
        logger.error(f"Discovery fehlgeschlagen: {e}", exc_info=True)
        raise HTTPException(status_code=500, detail="Discovery fehlgeschlagen")

    domain = multi["domain"]
    category = multi["category"]
    feeds = multi.get("feeds", [])

    # Fallback auf Einzel-Discovery wenn keine Feeds gefunden
    if not feeds:
        try:
            single = await discover_source(url)
            if single.get("rss_url"):
                feeds = [{"name": single["name"], "url": single["rss_url"]}]
                domain = single.get("domain", domain)
                category = single.get("category", category)
        except Exception:
            pass

    if not feeds:
        return {
            "domain": domain,
            "category": category,
            "feeds": [],
            "existing": [],
            "message": "Keine RSS-Feeds gefunden",
        }

    # Mit Claude bewerten
    try:
        relevant_feeds = await evaluate_feeds_with_claude(domain, feeds)
    except Exception:
        relevant_feeds = feeds[:3]

    # Bereits vorhandene Grundquellen pruefen
    cursor = await db.execute(
        "SELECT url FROM sources WHERE tenant_id IS NULL AND url IS NOT NULL"
    )
    existing_urls = {row["url"] for row in await cursor.fetchall()}

    result_feeds = []
    existing = []
    for feed in relevant_feeds:
        info = {
            "name": feed.get("name", domain_to_display_name(domain)),
            "url": feed["url"],
            "domain": domain,
            "category": category,
        }
        if feed["url"] in existing_urls:
            existing.append(info)
        else:
            result_feeds.append(info)

    return {
        "domain": domain,
        "category": category,
        "feeds": result_feeds,
        "existing": existing,
    }


@router.post("/discover/add")
async def add_discovered_sources(
    feeds: list[dict],
    admin: dict = Depends(get_current_admin),
    db: aiosqlite.Connection = Depends(db_dependency),
):
    """Erkannte Feeds als Grundquellen anlegen.

    Erwartet eine Liste von {name, url, domain, category}.
    Ueberspringt bereits vorhandene URLs.
    """
    cursor = await db.execute(
        "SELECT url FROM sources WHERE tenant_id IS NULL AND url IS NOT NULL"
    )
    existing_urls = {row["url"] for row in await cursor.fetchall()}

    added = 0
    skipped = 0
    for feed in feeds:
        if not feed.get("url"):
            continue
        if feed["url"] in existing_urls:
            skipped += 1
            continue

        domain = feed.get("domain", "")
        await db.execute(
            """INSERT INTO sources (name, url, domain, source_type, category, status, added_by, tenant_id)
               VALUES (?, ?, ?, 'rss_feed', ?, 'active', 'system', NULL)""",
            (feed["name"], feed["url"], domain, feed.get("category", "sonstige")),
        )
        existing_urls.add(feed["url"])
        added += 1

    # Web-Source für die Domain anlegen wenn noch nicht vorhanden
    if feeds and feeds[0].get("domain"):
        domain = feeds[0]["domain"]
        cursor = await db.execute(
            "SELECT id FROM sources WHERE LOWER(domain) = ? AND source_type = 'web_source' AND tenant_id IS NULL",
            (domain.lower(),),
        )
        if not await cursor.fetchone():
            await db.execute(
                """INSERT INTO sources (name, url, domain, source_type, category, status, added_by, tenant_id)
                   VALUES (?, ?, ?, 'web_source', ?, 'active', 'system', NULL)""",
                (domain_to_display_name(domain), f"https://{domain}", domain,
                 feeds[0].get("category", "sonstige")),
            )
            added += 1

    await db.commit()
    return {"added": added, "skipped": skipped}



# --- Health-Check & Vorschläge ---

@router.get("/health")
async def get_health(
    admin: dict = Depends(get_current_admin),
    db: aiosqlite.Connection = Depends(db_dependency),
):
    """Health-Check-Ergebnisse abrufen."""
    # Prüfen ob Tabelle existiert
    cursor = await db.execute(
        "SELECT name FROM sqlite_master WHERE type='table' AND name='source_health_checks'"
    )
    if not await cursor.fetchone():
        return {"last_check": None, "total_checks": 0, "errors": 0, "warnings": 0, "ok": 0, "checks": []}

    cursor = await db.execute("""
        SELECT
            h.id, h.source_id, s.name, s.domain, s.url, s.source_type,
            h.check_type, h.status, h.message, h.details, h.checked_at
        FROM source_health_checks h
        JOIN sources s ON s.id = h.source_id
        ORDER BY
            CASE h.status WHEN 'error' THEN 0 WHEN 'warning' THEN 1 ELSE 2 END,
            s.name
    """)
    checks = [dict(row) for row in await cursor.fetchall()]

    error_count = sum(1 for c in checks if c["status"] == "error")
    warning_count = sum(1 for c in checks if c["status"] == "warning")
    ok_count = sum(1 for c in checks if c["status"] == "ok")

    cursor = await db.execute("SELECT MAX(checked_at) as last_check FROM source_health_checks")
    row = await cursor.fetchone()
    last_check = row["last_check"] if row else None

    return {
        "last_check": last_check,
        "total_checks": len(checks),
        "errors": error_count,
        "warnings": warning_count,
        "ok": ok_count,
        "checks": checks,
    }


@router.get("/suggestions")
async def get_suggestions(
    admin: dict = Depends(get_current_admin),
    db: aiosqlite.Connection = Depends(db_dependency),
):
    """Alle Vorschläge abrufen (pending zuerst, dann letzte 20 bearbeitete)."""
    cursor = await db.execute(
        "SELECT name FROM sqlite_master WHERE type='table' AND name='source_suggestions'"
    )
    if not await cursor.fetchone():
        return []

    cursor = await db.execute("""
        SELECT * FROM source_suggestions
        ORDER BY
            CASE status WHEN 'pending' THEN 0 ELSE 1 END,
            created_at DESC
        LIMIT 50
    """)
    return [dict(row) for row in await cursor.fetchall()]


class SuggestionAction(BaseModel):
    accept: bool


@router.put("/suggestions/{suggestion_id}")
async def update_suggestion(
    suggestion_id: int,
    action: SuggestionAction,
    admin: dict = Depends(get_current_admin),
    db: aiosqlite.Connection = Depends(db_dependency),
):
    """Vorschlag annehmen oder ablehnen."""
    import json as _json

    cursor = await db.execute(
        "SELECT * FROM source_suggestions WHERE id = ?", (suggestion_id,)
    )
    suggestion = await cursor.fetchone()
    if not suggestion:
        raise HTTPException(status_code=404, detail="Vorschlag nicht gefunden")

    suggestion = dict(suggestion)
    if suggestion["status"] != "pending":
        raise HTTPException(status_code=400, detail=f"Vorschlag bereits {suggestion['status']}")

    new_status = "accepted" if action.accept else "rejected"
    result_action = None

    if action.accept:
        stype = suggestion["suggestion_type"]
        data = _json.loads(suggestion["suggested_data"]) if suggestion["suggested_data"] else {}

        if stype == "add_source":
            name = data.get("name", "Unbenannt")
            url = data.get("url")
            domain = data.get("domain", "")
            category = data.get("category", "sonstige")
            source_type = "rss_feed" if url and any(
                x in (url or "").lower() for x in ("rss", "feed", "xml", "atom")
            ) else "web_source"

            if url:
                cursor = await db.execute(
                    "SELECT id FROM sources WHERE url = ? AND tenant_id IS NULL", (url,)
                )
                if await cursor.fetchone():
                    result_action = "übersprungen (URL bereits vorhanden)"
                    new_status = "rejected"
                else:
                    await db.execute(
                        "INSERT INTO sources (name, url, domain, source_type, category, status, added_by, tenant_id) "
                        "VALUES (?, ?, ?, ?, ?, 'active', 'haiku-vorschlag', NULL)",
                        (name, url, domain, source_type, category),
                    )
                    result_action = f"Quelle '{name}' angelegt"
            else:
                result_action = "übersprungen (keine URL)"
                new_status = "rejected"

        elif stype == "deactivate_source":
            source_id = suggestion["source_id"]
            if source_id:
                await db.execute("UPDATE sources SET status = 'inactive' WHERE id = ?", (source_id,))
                result_action = "Quelle deaktiviert"

        elif stype == "remove_source":
            source_id = suggestion["source_id"]
            if source_id:
                await db.execute("DELETE FROM sources WHERE id = ?", (source_id,))
                result_action = "Quelle gelöscht"

        elif stype == "fix_url":
            source_id = suggestion["source_id"]
            new_url = data.get("url")
            if source_id and new_url:
                await db.execute("UPDATE sources SET url = ? WHERE id = ?", (new_url, source_id))
                result_action = f"URL aktualisiert"

    await db.execute(
        "UPDATE source_suggestions SET status = ?, reviewed_at = CURRENT_TIMESTAMP WHERE id = ?",
        (new_status, suggestion_id),
    )
    await db.commit()
    return {"status": new_status, "action": result_action}


@router.post("/health/run")
async def run_health_check_now(
    admin: dict = Depends(get_current_admin),
    db: aiosqlite.Connection = Depends(db_dependency),
):
    """Health-Check manuell starten."""
    # Tabellen sicherstellen
    await db.executescript("""
        CREATE TABLE IF NOT EXISTS source_health_checks (
            id INTEGER PRIMARY KEY AUTOINCREMENT,
            source_id INTEGER NOT NULL REFERENCES sources(id) ON DELETE CASCADE,
            check_type TEXT NOT NULL,
            status TEXT NOT NULL,
            message TEXT,
            details TEXT,
            checked_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
        );
        CREATE TABLE IF NOT EXISTS source_suggestions (
            id INTEGER PRIMARY KEY AUTOINCREMENT,
            suggestion_type TEXT NOT NULL,
            title TEXT NOT NULL,
            description TEXT,
            source_id INTEGER REFERENCES sources(id) ON DELETE SET NULL,
            suggested_data TEXT,
            priority TEXT DEFAULT 'medium',
            status TEXT DEFAULT 'pending',
            reviewed_at TIMESTAMP,
            created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
        );
    """)
    await db.commit()

    # source_health und source_suggester importieren
    sys.path.insert(0, "/home/claude-dev/AegisSight-Monitor/src")
    from services.source_health import run_health_checks
    from services.source_suggester import generate_suggestions

    result = await run_health_checks(db)
    suggestion_count = await generate_suggestions(db)

    return {
        "checked": result["checked"],
        "issues": result["issues"],
        "suggestions": suggestion_count,
    }